Unlock instant, AI-driven research and patent intelligence for your innovation.

Measuring system

a measurement system and measurement technology, applied in the direction of measurement devices, instruments, magnetic field magnitude/direction, etc., can solve the problems of reducing the packaging type is not suitable for harsh environments, and the peak magnetic field strength is not suitable, so as to reduce the component of magnetic flux density and increase the signal-to-offset ratio

Active Publication Date: 2016-09-13
TDK MICRONAS GMBH
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a way to change the magnetic field of a magnet to make it easier for magnetic field sensors to measure the magnetic field. This change reduces the magnetic flux density at certain points in space, which improves the accuracy of the sensor's output signal. The reduction is achieved using a flux concentrator. Overall, this technique helps to make magnetic field sensors more reliable and accurate.

Problems solved by technology

This package type, however, is not suitable for harsh environments, particularly those in an automobile.
This results in a decrease in the peak magnetic field strength, as a tooth passes through the magnetic field in proximity to the sensor element.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Measuring system
  • Measuring system
  • Measuring system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034]A schematic sectional view through a measuring system is shown in FIG. 1. The measuring system has a magnetic device with a permanent magnet 10 and a flux concentrator 20 made of a ferromagnetic material for generating a magnetic field and two magnetic field sensors 31, 32 for measuring the magnetic field. Magnetic field sensors 31, 32 are fixedly positioned relative to the magnetic device, for example, by plastic by means of a form closure. In this regard, sensor surfaces A of magnetic field sensors 31, 32 are positioned toward the magnetic field.

[0035]In addition, a coordinate system with the spatial directions x, y, and z is shown in FIG. 1. Furthermore, the y-component By of the magnetic flux in the spatial direction y is shown in FIG. 1. The illustration of the y-component By in FIG. 1 is determined here by means of FEM simulation. FIG. 1 here shows the y-component By in the case that no encoder made of a ferromagnetic material influences the magnetic field. The aim of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A measuring system, having a magnetic device for generating a magnetic field and having a magnetic field sensor with a sensor surface for detecting a flux density of the magnetic field penetrating the sensor surface at least in a first spatial direction, whereby the magnetic field sensor is fixedly positioned relative to the magnetic device. The magnetic device can have at least one permanent magnet and a flux concentrator made of a ferromagnetic material. The permanent magnet has at least two pole surfaces and an outer surface. The flux concentrator can have a smaller dimensions than the outer surface of the permanent magnet. The flux concentrator can be positioned within the outer surface of the permanent magnet and the flux concentrator and the permanent magnet can have a magnetic force closure.

Description

[0001]This nonprovisional application claims priority under 35 U.S.C. §119(a) to German Patent Application No. 10 2013 007 901.2, which was filed in Germany on May 8, 2013, and which is herein incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a measuring system.[0004]2. Description of the Background Art[0005]WO 2010 / 060607 A2, which corresponds to U.S. Pat. No. 8,680,847, discloses an IC package with a semiconductor chip with an integrated circuit and an integrated magnetic sensor. A permanent magnet, whose magnetic flux penetrates the sensor, is spaced apart from the semiconductor chip package. If an object to be measured approaches the head end of the semiconductor chip, the magnetic flux density through the sensor changes.[0006]U.S. 7,250,760 B2 discloses integrated magnetic Hall sensors in which a permanent magnet is disposed in the IC package. In this case, the Hall sensors are arranged in such a way to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(United States)
IPC IPC(8): G01B7/30G01R33/00G01R33/038
CPCG01R33/0011G01R33/038
Inventor HEBERLE, KLAUSFRANKE, JOERGBREITWIESER, OLIVERKAUFMANN, TIMO
Owner TDK MICRONAS GMBH